It has a mark of a fish or dolphin. I have researched this to mean it was either of a grade below 833 or it was used on old or foreign items.This mark was used between 1853 and 1893. It is in good complete condition with no damage. It weighs approx 15.9 grams and measures approx 4cm x 2.5cm. The item "Dutch silver vinaigrette in the form of a book C1880" is in sale since Saturday, July 21, 2018. This item is in the category "Antiques\Silver\Solid Silver\Vinaigrettes". The seller is "delcolantiques" and is located in Callington. This item can be shipped worldwide.